sic : Java Glossary

[sic] does not mean sick. When you see [sic] in material I have quoted like this,
with the letters [sic] in small grey type, that is a Latin abbreviation for
in that place. It means the preceding text is literally
the way it was in the original. It was not me who introduced that error. I have left
it exactly as is. It normally points to a spelling mistake, strange grammar or odd
capitalisation. These marks help prevent me from changing the original text when I do
bulk spell checks or proofreading.

However, it is also way of getting a dig at the speaker hinting s/he is an
ignoramus and/or slob. I use in most frequently in the feedback section.